--- title: "Home Extensions Stockport | Single & Double-Storey" description: "Stockport's trusted home extension specialists. Single, double-storey, wrap-around & rear extensions across Cheadle, Bramhall & Hale. 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Your itemised quote follows once we have properly surveyed the work and agreed the scope with you." } }, { "@type": "Question", "name": "Are you fully insured?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. Greenbank Building Services Ltd carries comprehensive public liability insurance." } }, { "@type": "Question", "name": "Which areas do you cover?", "acceptedAnswer": { "@type": "Answer", "text": "We cover Stockport, Cheadle, Bramhall, Hale, Wilmslow, Altrincham, Sale, Didsbury and the wider Trafford area." } }, { "@type": "Question", "name": "Do you handle planning and structural drawings?", "acceptedAnswer": { "@type": "Answer", "text": "Yes — we manage planning applications, building regulations and structural engineer drawings end-to-end." } }, { "@type": "Question", "name": "How long has Greenbank been trading?", "acceptedAnswer": { "@type": "Answer", "text": "Greenbank Building Services Ltd has been trading since 2017, and Lewis Gormley has been managing residential building projects across Stockport and Cheshire since 2011. Company No. 10785566." } } ] }, { "@context": "https://schema.org", "@type": "Service", "serviceType": "Home Extensions", "name": "Home Extensions in Stockport", "provider": { "@type": "GeneralContractor", "name": "Greenbank Building Services Ltd", "telephone": "+447360269988", "url": "https://greenbankbuildingservices.co.uk", "address": { "@type": "PostalAddress", "streetAddress": "79 Altrincham Rd, Gatley", "addressLocality": "Stockport", "postalCode": "SK8 4EG", "addressCountry": "GB" } }, "areaServed": [ { "@type": "City", "name": "Stockport" }, { "@type": "City", "name": "Cheadle" }, { "@type": "City", "name": "Bramhall" }, { "@type": "City", "name": "Hale" }, { "@type": "City", "name": "Wilmslow" }, { "@type": "City", "name": "Altrincham" }, { "@type": "City", "name": "Sale" }, { "@type": "City", "name": "Didsbury" }, { "@type": "City", "name": "Trafford" } ], "description": "Stockport's trusted home extension specialists. Single, double-storey, wrap-around & rear extensions across Cheadle, Bramhall & Hale. Site visit in 48 hours.", "url": "https://greenbankbuildingservices.co.uk/services/home-extensions", "offers": { "@type": "Offer", "url": "https://greenbankbuildingservices.co.uk/contact", "priceCurrency": "GBP", "availability": "https://schema.org/InStock", "itemOffered": { "@type": "Service", "name": "Home Extensions" } } }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "How much does a home extension cost in Stockport?", "acceptedAnswer": { "@type": "Answer", "text": "As a guide, a single-storey rear extension typically ranges from £2,200–£3,000 per square metre for a quality finish, and double-storey from £1,800–£2,400 per square metre. Glazing, kitchens and groundworks complexity move the figure. We always issue a fixed-price quote — never a vague allowance — once we've surveyed the site." } }, { "@type": "Question", "name": "How long does an extension take to build?", "acceptedAnswer": { "@type": "Answer", "text": "Most single-storey extensions complete in 10–14 weeks on site. Double-storey builds typically run 14–20 weeks. Planning and design usually take 8–12 weeks beforehand. We give you a written programme with key dates before work starts." } }, { "@type": "Question", "name": "Do I need planning permission?", "acceptedAnswer": { "@type": "Answer", "text": "Many rear extensions fall under Permitted Development, but limits vary by property type, conservation area and previous extensions. We assess this for free at survey stage and submit either a Lawful Development Certificate or full planning application as required." } }, { "@type": "Question", "name": "Will I need to move out during the build?", "acceptedAnswer": { "@type": "Answer", "text": "For rear extensions, almost never — we protect the existing house and seal off works zones. For double-storey or major structural alterations affecting the kitchen or only bathroom, a short decant is sometimes sensible. We'll tell you honestly at quote stage." } }, { "@type": "Question", "name": "What guarantee do you provide?", "acceptedAnswer": { "@type": "Answer", "text": "A personally backed workmanship — Lewis returns to put right anything that isn't right on every Greenbank extension, plus all manufacturer warranties on materials (typically 10–25 years on roofing, glazing and boilers). Structural elements are signed off by Building Control." } }, { "@type": "Question", "name": "Do you handle planning, drawings and Building Regs?", "acceptedAnswer": { "@type": "Answer", "text": "Yes — fully. Architectural drawings, structural calculations, planning applications, party-wall notices, Building Control submissions and inspections. You deal with one company, not five." } }, { "@type": "Question", "name": "Can you match the existing brick and roof tiles?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. We source bricks and tiles from reclamation yards or specialist suppliers to match host materials as closely as possible. For older Stockport semis with weathered brick, we'll often blend reclaimed and new to soften the transition." } }, { "@type": "Question", "name": "Do you work in Hale, Bramhall, Cheadle and Wilmslow?", "acceptedAnswer": { "@type": "Answer", "text": "Yes — we cover all of Stockport, Cheadle, Bramhall, Hale, Wilmslow, Altrincham, Sale, Didsbury and the wider Trafford area." } } ] }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://greenbankbuildingservices.co.uk/" }, { "@type": "ListItem", "position": 2, "name": "Services", "item": "https://greenbankbuildingservices.co.uk/services" }, { "@type": "ListItem", "position": 3, "name": "Home Extensions", "item": "https://greenbankbuildingservices.co.uk/services/home-extensions" } ] } ] --- [![Greenbank Building Services](/assets/greenbank-logo-D73iH9SF.png)](/) [Home](/)[About](/about) Services Service Areas [Our Work](/our-work)[Reviews](/reviews)[Contact](/contact) [07360 269988 ](tel:+447360269988)[Enquire](/contact) ![Completed detached home with new front porch extension, render finish and block-paved driveway in Stockport](/assets/service-home-extension-CGWzm6B5.jpg) [Home](/)[Services](/services)Home Extensions Home Extensions · Stockport # Home Extensions in Stockport, Built to Add Space, Light & Long-Term Value. Whether you need a brighter kitchen-diner, a generous family room or a full second-storey, we design and build extensions that feel inevitable — like the house was always meant to look this way. Fixed-price, planning included, completed on schedule. [Request a Consultation](/contact)[07360 269988](tel:+447360269988) Free design consultation · Detailed fixed-price quote after a proper site survey In short A home extension in Stockport typically takes 10–16 weeks on site, from foundations to final decoration. Single-storey rear extensions generally run £2,200–£3,000 per square metre for a quality finish, with double-storey work from £1,800–£2,400 per square metre. Greenbank handles design, planning, structural drawings and the full build with one accountable team, and we respond within 48 hours to book a free site visit. 14+ Yrs Building experience 200+ Projects Delivered across Cheshire Local Stockport-based, Lewis-led Fully Insured Public liability cover 48-Hour Reply Site visit booked Overview ## What you need to know about home extensions. A home extension is one of the highest-return improvements a Stockport homeowner can make — provided it is designed and built properly. Done well, it transforms how you live every single day, increases natural light, opens the home to the garden and adds significant resale value. Done badly, it leaves you with cold spots, leaks, planning trouble and a building that drags the value of the rest of the house down. ### What it is We design and build single-storey rear, side-return and wrap-around extensions, plus double-storey and over-structure builds. Every project is delivered turnkey: structural drawings, building control, foundations, brickwork, steels, roofing, glazing, plastering, electrics, plumbing and final decoration — all by one accountable team. ### Who it's for Families who have outgrown the existing footprint, owners of period or 1930s semis wanting an open-plan kitchen-diner, and homeowners in Hale, Bramhall, Cheadle and Wilmslow looking to add a high-spec ground-floor master suite or second-storey bedrooms rather than move. ### When you need it When the kitchen feels cramped, when guests have nowhere to sit, when working from home means working from a corner of the bedroom, or when moving costs (stamp duty, agent fees, removals) make staying and extending the obvious financial decision. ### Why a specialist Extensions involve foundations, structural openings, party-wall law, building regulations, glazing performance and weatherproofing detail. Get any one of those wrong and the cost of putting it right runs into tens of thousands. A specialist builder protects you from every one of those risks. The Real Risk ## What happens when this goes wrong. Most extension regret traces back to two decisions: hiring on price alone, and underspecifying the build. Both are avoidable. ### Risks of cutting corners - Cracking and movement caused by undersized foundations on Stockport's mixed clay-and-sandstone subsoils. - Cold bridging and condensation where insulation, glazing and roof junctions have been detailed by a generalist rather than a specialist. - Planning enforcement notices when permitted development limits are misjudged — particularly common on rear extensions in conservation areas like Bramhall village. - Leaking flat roofs within 3–5 years from cheap single-ply or felt systems applied without proper falls and upstands. - Drainage failures and Building Regs sign-off refusals when soil pipes and surface water haven't been routed correctly from day one. ### Common homeowner mistakes - Choosing the cheapest quote without comparing what's actually included (foundations depth, steel sizes, glazing U-values, decoration). - Letting the architect design in isolation without builder input on buildability and cost. - Skipping party-wall agreements with neighbours and getting served an injunction halfway through the build. - Using domestic-spec bifold doors on a south-facing aspect with no solar control and watching the room overheat all summer. - Believing that 'project managing it yourself' will save money — it almost never does. Our Process ## How we deliver, step by step. 01 ### Free Site Survey Lewis attends in person to measure, assess constraints and understand what you actually want — not what's easiest for us to sell. 02 ### Design & Fixed Quote Once we've fully scoped the work on site, you receive an itemised, fixed-price quotation with drawings or specification sheets where required. Larger projects take longer to price properly — never a vague allowance. 03 ### Planning & Approvals We handle planning applications, building regulations, party-wall notices and structural drawings end-to-end. 04 ### Build Phase One accountable team on site, daily progress updates, protected work areas and a tidy site every evening. 05 ### Sign-Off & Guarantee Full walk-through, snagging completed before invoice, and your personally backed workmanship — Lewis returns to put right anything that isn't right issued on handover. ## Home Extensions — recent project photos. A small selection of completed home extensions work delivered by Greenbank across Stockport and Cheshire. ![Front porch extension under construction with new timber framing, freshly screeded floor and original arched brickwork preserved](/assets/IMG_1497-BgwCIL33.jpg) Front porch extension under construction with new timber framing, freshly screeded floor and original arched brickwork preserved In progress ![Finished grey kitchen extension with herringbone flooring and wide garden doors](/assets/IMG_6452-CJcBS8yB.jpg) Finished grey kitchen extension with herringbone flooring and wide garden doors Completed ![Completed open-plan kitchen with island seating and dining area](/assets/IMG_7222-uMM2uWvQ.jpg) Completed open-plan kitchen with island seating and dining area Completed Benefits ## Why homeowners choose Greenbank. 01 ### Fixed price, no surprises Itemised quote held for the duration of the build. Variations only with your written approval. 02 ### Planning handled for you We deal with the council, building control and party-wall surveyors. You sign three things, that's it. 03 ### Built for energy efficiency Insulation, airtightness and glazing specified to outperform current Part L — your bills don't go up. 04 ### One accountable team Lewis on site, the same trades from start to finish. No subcontractor handoffs, no finger-pointing. 05 ### Tidy, considerate site Dust protection, daily clean-down, and respect for the rest of the house you still have to live in. 06 ### Workmanship we stand behind In writing. Backed by a company that's been trading in Stockport for more than a decade and isn't going anywhere. Compare Your Options ## Single-storey, double-storey or wrap-around — which extension suits your home? Most Stockport and Cheshire homes suit one of three extension types. The table below compares typical scope, time on site and guide costs so you can sense-check your budget before we survey. Extension type Typical size Time on site Guide cost Best for Single-storey rear 15–30 m² 10–14 weeks £2,200–£3,000 per m² Open-plan kitchen-diners and family rooms Side return / wrap-around 12–25 m² 12–16 weeks £2,400–£3,200 per m² Victorian and Edwardian terraces with a narrow alley Double-storey 25–50 m² 14–20 weeks £1,800–£2,400 per m² Adding a bedroom and living space in one build Over-structure (above garage) 12–20 m² 8–12 weeks £1,900–£2,500 per m² Extra bedroom or office without losing garden Figures exclude VAT-exempt items, high-end glazing packages and kitchen supply. Your itemised quote follows the free site visit. Technical Detail ## The detail that separates a 30-year job from a 5-year one. There's no single 'right' extension — every property, plot and family is different. Here's what we build, how we build it, and the technical detail that separates a 30-year extension from a 5-year regret. 01 ### Types of extension we build We design and deliver every common extension type in the Stockport area: - Single-storey rear extensions — the classic open-plan kitchen-diner, typically 3–6m in projection. - Side-return infills — turning a Victorian or Edwardian terrace's wasted side alley into usable floor area. - Wrap-around extensions — combining rear and side returns for maximum ground-floor footprint. - Double-storey rear and side extensions — adding bedrooms above living space in one build. - Over-structure builds — adding a first floor above an existing single-storey extension or garage. - Orangeries and glazed link extensions — for clients wanting heritage character with modern performance. 02 ### Foundations and structure Stockport sits on variable ground — Mersey Valley alluvium, Bunter sandstone outcrops and pockets of made ground. We routinely specify trench-fill or reinforced raft foundations to between 1.0m and 1.8m depending on subsoil, proximity to trees and any heave risk. Steel beams (UC and UB sections) are calculated by an independent structural engineer for every project — never sized by rule of thumb. 03 ### Glazing and rooflights We specify aluminium bifold and slim sliding doors with thermally broken frames, double-glazed units with argon fill and warm-edge spacers as standard, triple glazing where orientation or budget warrants. Rooflights are flat-glass, thermally broken units with kerb upstands — never plastic domes. 04 ### Roofing on extensions Flat roofs are warm-roof construction with PIR insulation above the deck and a single-ply membrane (Sarnafil or equivalent) or high-grade GRP — never pour-and-roll felt. Pitched extensions use breathable membranes, ventilated battens and matching tiles sourced as close to the host roof as possible. 05 ### Heating and electrics All extensions are wired to current 18th Edition standards with RCBO protection. Underfloor heating is our default for ground-floor extensions — quieter, more comfortable and frees the walls for furniture. Existing boilers are checked for capacity before connection, and upgraded if undersized. FAQ ## Home Extensions — your questions, answered. Lewis personally responds to every enquiry. [Ask a Question](/contact) ### How much does a home extension cost in Stockport? ### How long does an extension take to build? ### Do I need planning permission? ### Will I need to move out during the build? ### What guarantee do you provide? ### Do you handle planning, drawings and Building Regs? ### Can you match the existing brick and roof tiles? ### Do you work in Hale, Bramhall, Cheadle and Wilmslow? By Location ## Home Extensions in your area Local guides covering typical property types, planning routes, guide costs and timescales street by street. [Home Extensions in Bramhall ](/services/home-extensions/bramhall)[Home Extensions in Hale ](/services/home-extensions/hale)[Home Extensions in Cheadle ](/services/home-extensions/cheadle) Related Services ## You may also need [Loft Conversions ](/services/loft-conversions)[Structural Works ](/services/structural-works)[Full Property Renovations ](/services/full-property-renovations) Next Step ## Ready to get a real price for your home extensions project? Free site visit. Itemised, detailed fixed-price quote after a proper site survey. No pressure. Just an honest plan you can trust. [Request a Consultation](/contact)[07360 269988](tel:+447360269988) Serving Stockport, Cheadle, Bramhall, Hale, Wilmslow, Altrincham, Sale, Didsbury & Trafford Greenbank — Stockport, Est. 2017 ## Built with confidence. Built to last. ![Greenbank Building Services](/assets/greenbank-logo-D73iH9SF.png) Stockport's residential building specialists. Extensions, renovations and bespoke home improvements crafted to stand the test of time. [](https://www.facebook.com/greenbankbuilding)[](https://www.instagram.com/greenbankbuilders/?hl=en) ### Services - [Loft Conversions](/services/loft-conversions) - [Garage Conversions](/services/garage-conversions) - [Home Extensions](/services/home-extensions) - [Roofing](/services/roofing) - [Kitchens](/services/kitchens) - [Bathrooms](/services/bathrooms) - [Structural Works](/services/structural-works) - [Full Renovations](/services/full-renovations) ### Areas - [Stockport](/areas/stockport) - [Altrincham](/areas/altrincham) - [Trafford](/areas/trafford) - [Didsbury](/areas/didsbury) - [Wilmslow](/areas/wilmslow) - [Cheadle](/areas/cheadle) - [Bramhall](/areas/bramhall) - [Sale](/areas/sale) - [Hale](/areas/hale) - [FAQs](/faq) ### Contact - [07360 269988](tel:+447360269988) - [Info@greenbankbuildingservices.co.uk](mailto:Info@greenbankbuildingservices.co.uk) - 79 Altrincham Rd, Gatley, Stockport SK8 4EG - Mon–Fri · 8:00am – 6:00pm Sat–Sun · Closed © 2026 Greenbank Building Services Ltd · Co. 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